13405579 has 8 divisors (see below), whose sum is σ = 14801472. Its totient is φ = 12039240.

The previous prime is 13405549. The next prime is 13405607. The reversal of 13405579 is 97550431.

13405579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13405579 - 2⁷ = 13405451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13405519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6429 + ... + 8254.

It is an arithmetic number, because the mean of its divisors is an integer number (1850184).

Almost surely, 2^13405579 is an apocalyptic number.

13405579 is a deficient number, since it is larger than the sum of its proper divisors (1395893).

13405579 is a wasteful number, since it uses less digits than its factorization.

13405579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14777.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 13405579 is about 3661.3629975734. The cubic root of 13405579 is about 237.5537326255.

The spelling of 13405579 in words is "thirteen million, four hundred five thousand, five hundred seventy-nine".